Costco cited major appliances among its best performing categories last month, and included office products and media among its weakest. BJ’s said TVs and other consumer electronics showed strong comp sale increases in June, while computers, DVD software and room air conditioners were among its weaker performers.

Separately, Sharper Image said net sales fell 21 percent in June to $36.4 million and comp sales dropped 26 percent year-over-year. CEO Richard Thalheimer attributed the declines to softness in the company’s core air purifier and massage chair categories, and its exit from the iPod business.